<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>电商后台管理系统</span>
      </div>
      <!-- 退出按钮注册事件,清空token,重定项到/login -->
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>

    <!-- 内容区域 -->
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!-- 折叠菜单 -->
        <div class="toggle-button" @click="toggleCollapse">||||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="red"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 内容 -->
              <span>{{item.authName}}</span>
            </template>
            <!-- 二级菜单 -->
            <el-menu-item
              :index="'/' + subItem.path + ''"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saceNavState('/' + subItem.path + '')"
            >
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体区域 -->
      <el-main>
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        "125": "iconfont icon-users",
        "103": "iconfont icon-tijikongjian",
        "101": "iconfont icon-shangpin",
        "102": "iconfont icon-danju",
        "145": "iconfont icon-baobiao"
      },
      //控制菜单是否折叠
      isCollapse: false,
      activePath: ""
    };
  },
  watch: {
    $route(to, from) {
      this.activePath = to.path;
    }
  },
  created() {
    //获取页面初始化数据
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("activePath");
    //设置导航项高亮
    // this.activePath = location.hash.slice(1);
  },
  methods: {
    //退出操作
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
    },
    //获取所有菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      //   console.log(res);
    },
    //折叠菜单点击事件
    toggleCollapse() {
      this.isCollapse = !this.isCollapse;
    },
    saceNavState(activePath) {
      window.sessionStorage.setItem("activePath", activePath);
      this.activePath = activePath;
    }
  }
};
</script>


<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: greenyellow;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.home-container {
  height: 100%;
}
.el-aside {
  background-color: #333744;
  .el-menu {
    overflow: hidden;
  }
}
.el-main {
  background-color: #eaedf1;
}
.el-button {
  font-weight: 700;
  color: red;
}
.iconfont {
  margin-right: 10px;
}
.toggle-button {
  background-color: pink;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>